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density measurement for plastic injection molding via ultrasonic technology

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0714-2

Abstract: Therefore, in-situi> density measurement is of great interest and has significant application valueThis study is the first to propose an in-situi> density measurement method using ultrasonic technologyThe proposed method has the advantages of in-situi> measurement, non-destructive, high accuracy,

Keywords： ultrasonic measurement melt density in-situi> measurement injection molding

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Development of an Ini>-Situi> Laser Machining System Using a Three-Dimensional Galvanometer Article

Xiao Li, Bin Liu, Xuesong Mei, Wenjun Wang, Xiaodong Wang, Xun Li

Engineering 2020, Volume 6, Issue 1, Pages 68-76 doi: 10.1016/j.eng.2019.07.024

Abstract: ini>-situi> laser machining system integrating laser measurement and machining was built usingA line structured light measurement model based on a galvanometer scanner was proposed to obtain theA height calibration method was proposed to further ensure measurement accuracy, so as to achieve accurateIn comparison with the conventional line structured light measurement method, the proposed methods doThe ini>-situi> laser machining system realizes a simple operation process by integrating measurement

Keywords： Ini>-situi> laser machining Three-dimensional galvanometer scanner Line structured light Three-dimensional measurement

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A low cost wearable optical-based goniometer for human joint monitoring

Chee Kian LIM, Zhiqiang LUO, I-Ming CHEN, Song Huat YEO

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1, Pages 13-22 doi: 10.1007/s11465-011-0201-7

Abstract: fields of physical and occupational therapy, goniometers are indispensible when it comes to angular measurementpaper, we present a reliable and non-intrusive design of an optical-based goniometer for human joint measurement

Keywords： optical goniometer human-joint measurement

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3D Microdisplacement Monitoring of Large Aircraft Assembly with Automated In Situi> Calibration Article

Zhenyuan Jia, Bing Liang, Wei Liu, Kun Liu, Jianwei Ma

Engineering 2022, Volume 19, Issue 12, Pages 105-116 doi: 10.1016/j.eng.2021.02.023

Abstract:

Three-dimensional (3D) microdisplacement monitoring plays a crucial role in the assembly of large aircraft. This paper presents a broadly applicable high-precision online 3D microdisplacement monitoring method and system based on proximity sensors as well as a corresponding in situ calibration method, which can be applied under various extreme working conditions encountered in the aircraft assembly process, such as compact and obstructed spaces. A 3D monitoring model is first established to achieve 3D microdisplacement monitoring based only on the one-dimensional distances measured by proximity sensors, which concerns the extrinsic sensor parameters, such as the probe base point (PBP) and the unit displacement vector (UDV). Then, a calibration method is employed to obtain these extrinsic parameters with high precision by combining spatial transformation principles and weighted optimization. Finally, calibration and monitoring experiments performed for a tailplane assembly process are reported. The calibration precision for the PBP is better than ±10 μm in the X and Y directions and ±2 μm in the Z direction, and the calibration precision for the UDV is better than 0.07°. Moreover, the accuracy of the 3D microdisplacement monitoring system can reach ±15 μm. In general, this paper provides new insights into the modeling and calibration of 3D microdisplacement monitoring based on proximity sensors and a precise, efficient, and low-cost technical means for performing related measurements in compact spaces during the aircraft assembly process.

Keywords： Aircraft manufacture Assembly Calibration Condition monitoring Displacement measurement

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A measurement system for thin elastohydrodynamic lubrication films

WANG Xuefeng, GUO Feng, YANG Peiran

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2, Pages 193-196 doi: 10.1007/s11465-007-0032-8

Abstract: An elastohydrodynamic lubrication (EHL) film measurement system using multi-beam interferometry is introducedThe measurement principle and the instrumentation are discussed.It is demonstrated that the presented measurement system can provide continuous measurement of lubricating

Keywords： instrumentation continuous measurement elastohydrodynamic lubrication ultra-thin measurement

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Experimental measurement of double-K fracture parameters of concrete with small-size aggregates

ZHANG Xiufang, XU Shilang, ZHENG Shuang

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 4, Pages 448-457 doi: 10.1007/s11709-007-0061-8

Abstract: The double- fracture model can well describe the development of cracks undergoing during the entire fracture process in concrete. Therefore, it has been selected as the theoretical basis of the Norm for fracture test of

Keywords： development concrete theoretical double- fracture

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Study on direct measurement method of vorticity from particle images

RUAN Xiaodong, FU Xin, YANG Huayong

Frontiers in Energy 2007, Volume 1, Issue 4, Pages 408-412 doi: 10.1007/s11708-007-0059-1

Abstract: To overcome the shortcomings of conventional methods for vorticity measurement, a new direct measurement

Keywords： conventional vorticity measurement particle DMV theory

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Ultrasonic measurement of tie-bar stress for die-casting machine

Frontiers of Mechanical Engineering doi: 10.1007/s11465-021-0663-1

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Requirements in performance measurement systems of construction projects from the lean production perspective

Karina B. BARTH, Carlos T. FORMOSO

Frontiers of Engineering Management 2021, Volume 8, Issue 3, Pages 442-455 doi: 10.1007/s42524-020-0108-2

Abstract: Performance measurement (PM) generates useful data for process control, facilitates communication betweenIn addition, studies on how lean companies (or projects) use performance measurement and to what extent

Keywords： performance measurement lean construction production management continuous improvement metrics

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The adoption of repeated measurement of variance analysis and Shapiro–Wilk test

Frontiers of Medicine 2022, Volume 16, Issue 4, Pages 659-660 doi: 10.1007/s11684-021-0908-8

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100 Years of Gear Measurement Technology——Review & Prospect

Shi Zhaoyao,Fei Yetai,Xie Huakun

Strategic Study of CAE 2003, Volume 5, Issue 9, Pages 13-17

Abstract:

The evolution of gear measurement technology in the past 100 years is fully reviewed, and 6 key issuesEmphases are laid on the development of gear measurement principles, the evolution of technical measuresrealizing them and the interpretation & utilization of measurement results.A few of new phenomena in the field of gear measurement technology are remarked, and some research topics

Keywords： gear gear measurement gear deviation gear measuring instrument

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Single-electromagnet levitation for density measurement and defect detection

Yuhan JIA, Peng ZHAO, Jun XIE, Xuechun ZHANG, Hongwei ZHOU, Jianzhong FU

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1, Pages 186-195 doi: 10.1007/s11465-020-0608-0

Abstract: single-electromagnet levitation device has a large measuring range and can realize accurate density measurement

Keywords： single-electromagnet electromagnetic levitation density measurement defect detection

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Measurement and analysis of tip clearance unsteady flow spectrum in axial-flow fan rotor

LIU Bo, HOU Weimin, MA Changyou, WANG Yangang, ZHOU Qiang

Frontiers in Energy 2008, Volume 2, Issue 4, Pages 448-452 doi: 10.1007/s11708-008-0088-0

Abstract: The dynamic pressure measurement device and test technology are described in this study.

Keywords： development endwall unsteady pressure pressure measurement experiment

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A review of measurement methods for peracetic acid (PAA)

Chen Cheng, Haodong Li, Jinling Wang, Hualin Wang, Xuejing Yang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1266-5

Abstract: This review summarizes the measurement and detection methods of peroxyacetic acid, comparing the principle

Keywords： Peroxyacetic acid Measurement methods Titration Colorimetric Chromatography NMR

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A critical review of preparation design and workability measurement of concrete material for largescale

Guowei MA, Li WANG

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 3, Pages 382-400 doi: 10.1007/s11709-017-0430-x

Abstract: and optimization of concrete materials which possess favourable printable properties as well as the measurementThe objective of this work is to review current design methodologies and experimental measurement and

Keywords： 3D printing concrete material printable property workability measurement construction automation

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Title Author Date Type Operation

density measurement for plastic injection molding via ultrasonic technology

Journal Article

Development of an Ini>-Situi> Laser Machining System Using a Three-Dimensional Galvanometer

Xiao Li, Bin Liu, Xuesong Mei, Wenjun Wang, Xiaodong Wang, Xun Li

Journal Article

A low cost wearable optical-based goniometer for human joint monitoring

Chee Kian LIM, Zhiqiang LUO, I-Ming CHEN, Song Huat YEO

Journal Article

3D Microdisplacement Monitoring of Large Aircraft Assembly with Automated In Situi> Calibration

Zhenyuan Jia, Bing Liang, Wei Liu, Kun Liu, Jianwei Ma

Journal Article

A measurement system for thin elastohydrodynamic lubrication films

WANG Xuefeng, GUO Feng, YANG Peiran

Journal Article

Experimental measurement of double-K fracture parameters of concrete with small-size aggregates

ZHANG Xiufang, XU Shilang, ZHENG Shuang

Journal Article

Study on direct measurement method of vorticity from particle images

RUAN Xiaodong, FU Xin, YANG Huayong

Journal Article

Ultrasonic measurement of tie-bar stress for die-casting machine

Journal Article

Requirements in performance measurement systems of construction projects from the lean production perspective

Karina B. BARTH, Carlos T. FORMOSO

Journal Article

The adoption of repeated measurement of variance analysis and Shapiro–Wilk test

Journal Article

100 Years of Gear Measurement Technology——Review & Prospect

Shi Zhaoyao,Fei Yetai,Xie Huakun

Journal Article

Single-electromagnet levitation for density measurement and defect detection

Yuhan JIA, Peng ZHAO, Jun XIE, Xuechun ZHANG, Hongwei ZHOU, Jianzhong FU

Journal Article

Measurement and analysis of tip clearance unsteady flow spectrum in axial-flow fan rotor

LIU Bo, HOU Weimin, MA Changyou, WANG Yangang, ZHOU Qiang

Journal Article

A review of measurement methods for peracetic acid (PAA)

Chen Cheng, Haodong Li, Jinling Wang, Hualin Wang, Xuejing Yang

Journal Article

A critical review of preparation design and workability measurement of concrete material for largescale

Guowei MA, Li WANG

Journal Article

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